Source of HNs own 'Save to Pocket' link on every item?

Noticed the Pocket extension for Chrome started doing that recently. If you open the extensions page there is an options link for the Pocket plugin. In there it has a few sites it appends the links to that you can enable/disable

Buffer does that,too. They annotate onto the existing DOM when HN is detected.

Awesome. That was my guess. I didn't think pocket was that widespread enough that HN would implement something site wide like that... but I wasnt sure because they havent done anything site specific that i've noticed so far.

Thanks!

I don't know what Pocket is, but I don't see those links.

Ah ok. Must be my pocket plugin. (It's a 'read later' plugin).

Thanks!